JS input onClick not defined

Question

I'm starting a series of simple exercices in JS and im getting stucked just at the beiginning of this.

Can someone bring me some light about what is going on? I don't see where is the mistake.

Thanks :)

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Basicos Laura</title>
  <script>
    window.onload = ejerciciosBasicos;
    function ejerciciosBasicos() {
      //1) HACER UN MÉTODO QUE RECIBA UNA CADENA Y UN CARÁCTER Y DIGA SI ESE CARÁCTER PERTENECE A LA CADENA O NO.

      function comprobarCadena() {
        var palabra = document.getElementById("introducidoPorUsuario").value
        console.log = palabra;
        return palabra;
      } //cierra comprobarCadena
    } //cierra ejercicios basicos
  </script>
</head>

<body>
  <div id="ejercicio1">
    Ejercicio 1
    <input type="text" id="introducidoPorUsuario">
    <input type="text" id="letraIntroducidaPorUsuario">
    <input type="button" value="Ok" onClick="comprobarCadena();">
    <input type="text" id="inResultado">
  </div>
</body>

</html>

Quentin · Accepted Answer · 2020-03-02 13:15:11Z

2

comprobarCadena isn't a global. It only exists in the scope of ejerciciosBasicos.

Don't use an onclick attribute. Bind your event handler with addEventListener inside ejerciciosBasicos so that it is in scope.

answered Mar 2, 2020 at 13:15

Quentin

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2 Comments

Kai Eis Over a year ago

I've never used that (less than 1 month experience). I'm trying to undertand documentation on the mozzila developer but I cannot see how it works.

Quentin Over a year ago

@KaiEis — Have you read the section headed "Add a simple listener"?

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